Unfortunately I am still running Windows XP on my laptop so I don’t have experience with that, only some tips:
* If you go to Manage network connections in the Network and Sharing Center and double-click your Wireless Adapter, do you see packets counting in both Sent and Received while trying to connect to a network?
* If the previous tip result is true, what happens if you completely disable any security measures in you AccessPoint like Encryption/MAC Address filtering and Hidden SSID?
* Try to disable your firewall software.
Hope this way we can find the source of your problem!